General Chemistry
Only available for you
167 Where does the oxygen that keeps us alive come from?
A
Carbon dioxide
B
Carbonates absorbed from
soil
C
Oxides of minerals
D
Water
171 Milk is a colloidal system in which:
A
Water is dispersed in fat
B
Fat is dispersed in water
C
Fat and water are dispersed
in each other
D
Fat is dissolved
173 Domestic cooking gas consists mostly of :
A
methane and ethane
B
liquified butane and isobutane
C
hydrogen and acetylene
D
ethylene and carbon monoxide
174 The acid which is secreted by the glands in the stomach wall is :
A
sulphuric acid
B
hydrochloric acid
C
nitric acid
D
phosphoric acid
175 Muscle fatigue is caused by the accumulation of :
A
Pyruvic acid
B
Lactic acid
C
Oxalacetic acid
D
Uric acid
178 When quick lime is added to water
A
heat is liberated
B
heat is absorbed
C
temperature decreases
D
no heat change takes place